How to use Key Bindings in Java?

[Dilbert]

Hi friends,
I am new for the Java. I have done some basic things in the Core Java. Before that I have completed with C++ programming language. Now I want to do the key binding in my application which I am finding very difficult to do. So expecting some help from you guys. Please tell me how to use Key Bindings in Java.?? Hope that someone would help me quickly.!!

[CodGuru]

The JComponent class supports key bindings as a way of responding to individual keys typed by a user. All Swing components use Key Bindings. The following are some examples of when key bindings can be used :

• When you want to override the behavior of an existing key binding.
• When you're creating a custom component and want to support keyboard access to it.
• When you want to provide a new key binding for an existing action.

[void]

An alternative to key bindings is using key listeners. Key listeners are also difficult if the key binding is to be active when the component doesn't have focus. Swing uses an InputMap, to contain the KeyStrokes and an ActionMap to contain the Actions. The JComponent class supports key bindings as a way of responding to individual keys typed by a user. You often don't need to use key bindings directly. They're used behind the scenes by mnemonics.

[Allan.d]

Each JComponent has one action map and three input maps. You can check the following :

JComponent.WHEN_FOCUSED

The component has the keyboard focus. The WHEN_FOCUSED input map is typically used when the component has no children.

[MindSpace]

The input maps correspond to the following focus :

 JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT

The component contains (or is) the component that has the focus. This input map is commonly used for a composite component — a component whose implementation depends on child components.